- replace the SEC-1 (1CE1) (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
 (1) If the fault continues:

 - do the trouble shooting procedure (Ref. TASK 31-32-00-810-934) related to the DGO 01 digital output signal of the SEC 1 (Ref. ASM 27-92/53).

 (2) If the fault continues:

 - do a check and repair the wiring of the DGO 01 signal from the SEC1 (1CE1) COM part to the first terminal block if the maintenance message is SEC 1 COM BUS 1 (Ref. ASM 27-92/53) or
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page A227
 Feb 01/03R CES

 - do a check and repair the wiring of the DGO 01 signal from the SEC1 (1CE1) MON part to the first terminal block if the maintenance message is SEC 1 MOM BUS 1 (Ref. ASM 27-92/53).
 B. Do the test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page A228
 Feb 01/03R
 CES  Loss of the BUS 1 Signal for the SEC 3

 1. Possible Causes
_______________
 - SEC-3 (1CE3)

 - wiring of the DGO1 signal from the SEC 3 (1CE3) COM part to the first terminal block

 - wiring of the DGO1 signal from the SEC 3 (1CE3) MON part to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
31-32-00-810-934 Failure of the Digital Links
 AMM 27-94-34-000-001 Removal of the SEC (1CE1,1CE2,1CE3)
 AMM 27-94-34-400-001 Installation of the SEC (1CE1,1CE2,1CE3)
 AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning)
 ASM 27-92/55

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the EFCS (ground scanning) (Ref. AMM TASK 27-96-00-740-001).
 4. Fault Isolation
_______________
 A. If the BITE test gives the maintenance message:
 SEC3 COM BUS1
 or
 SEC3 MON BUS1

 - replace the SEC-3 (1CE3) (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
 (1) If the fault continues:

 - do the trouble shooting procedure (Ref. TASK 31-32-00-810-934) related to the DGO digital output signal of the SEC 3 (Ref. ASM 27-92/55).

 (2) If the fault continues:

 - do a check and repair the wiring of the DGO1 signal from the SEC 3 (1CE3) COM part to the first terminal block if the maintenance message is SEC 3 COM BUS 1 (Ref. ASM 27-92/55) or
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page A229
 Feb 01/03R CES

 - do a check and repair the wiring of the DGO1 signal from the SEC 3 (1CE3) MON part to the first terminal block if the maintenance message is SEC 3 MOM BUS 1 (Ref. ASM 27-92/55).
 B. Do the test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page A230
 Feb 01/03R
 CES  Loss of the FCDC 1 BUS 4 Signal for the SEC 1

 1. Possible Causes
_______________
 - SEC-1 (1CE1)

 - FCDC-1 (3CE1)

 - wiring of the DGI 10 signal from the SEC 1 (1CE1) to the FCDC 1 (3CE1)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 27-94-34-000-001 Removal of the SEC (1CE1,1CE2,1CE3)
 AMM 27-94-34-400-001 Installation of the SEC (1CE1,1CE2,1CE3)
 AMM 27-95-34-000-001 Removal of the FCDC (3CE1,3CE2)
 AMM 27-95-34-400-001 Installation of the FCDC (3CE1,3CE2)
 AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning)
 ASM 27-95/02

 3. Fault Confirmation
　
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